Java tutorial
/* ErrorDialogFragment Copyright (c) 2016 NTT DOCOMO,INC. Released under the MIT license http://opensource.org/licenses/mit-license.php */ package org.deviceconnect.android.deviceplugin.hitoe.fragment.dialog; import android.app.AlertDialog; import android.app.Dialog; import android.content.Context; import android.content.DialogInterface; import android.os.Bundle; import android.support.annotation.NonNull; import android.support.v4.app.DialogFragment; import android.text.InputType; import android.view.LayoutInflater; import android.view.View; import android.widget.EditText; import org.deviceconnect.android.deviceplugin.hitoe.R; /** * This fragment displays a dialog of Pincode input. * @author NTT DOCOMO, INC. */ public class PinCodeDialogFragment extends DialogFragment { /** Dialog. */ private AlertDialog mDialog; /** Dialog's listener. */ private OnPinCodeListener mListener; /** * Pin Code listener interface. */ public interface OnPinCodeListener { /** * Notify pin code listener. * @param pin pin code */ void onPinCode(final String pin); } /** * Initialize Pin code dialog. * @return pin code dialog */ public static PinCodeDialogFragment newInstance() { return new PinCodeDialogFragment(); } @NonNull @Override public Dialog onCreateDialog(final Bundle savedInstanceState) { if (mDialog != null) { return mDialog; } LayoutInflater inflater = (LayoutInflater) getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE); final View layout = inflater.inflate(R.layout.dialog_hitoe_pin, null); AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); builder.setTitle(getString(R.string.dialog_title_pin_input)); final EditText pinEdit = (EditText) layout.findViewById(R.id.input_pin); pinEdit.setInputType(InputType.TYPE_CLASS_NUMBER); builder.setView(layout); builder.setPositiveButton(R.string.hitoe_setting_dialog_positive, new DialogInterface.OnClickListener() { @Override public void onClick(final DialogInterface dialogInterface, final int i) { String pinString = pinEdit.getText().toString(); if (mListener != null) { mListener.onPinCode(pinString); } } }); builder.setNegativeButton("Cancel", null); mDialog = builder.create(); return mDialog; } @Override public Dialog getDialog() { return mDialog; } @Override public void onDestroy() { super.onDestroy(); mDialog = null; } @Override public void onDismiss(final DialogInterface dialog) { super.onDismiss(dialog); } /** * Set Pin Code listener. * @param listener listener */ public void setOnPinCodeListener(final OnPinCodeListener listener) { mListener = listener; } }